Granite, marble, quartz stone worktops, countertops - Craftsman Ltd, Reading, Berkshire
Granite, marble, quartz stone worktops, countertops from Craftsman Ltd, Reading, Berkshire.
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Granite Types Blue Pearl
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Blue Pearl granite

Description of colouring and granulometry:
Blue Pearl is a plutonic, coarse-grained rock of a bluish grey to silver blue colour with a regular structure made up of 85% feldspar
anorthoclase. Due to the atomized structure in parts and depending on the incident light and the direction from which it is observed, the individual crystals sparkle alternately with a
light-blue colour. The anorthoclase possesses parallel layers of atom lattices. The unpolished cutting plane of the crystals lying oblique to the lattice allows the light to reflect at an
oblique angle. With parallel cutting planes, the pearl-coloured blue sparkle is produced by the polished surfaces. The black biotite and the black-green pyroxene give this sienite an
intense colour contrast. Sporadic metal minerals, which reach a size of up to 5 mm and are stored between the feldspar crystals, have a metallic grey sheen. It is quarried in Norway
situated 100 km south from Oslo in the Porsgrunn-Larvik region.

Production / availability: good.

Other commercial names: Blue Pearl, Larvikite, Light Labrador.

Finitions-textures: smooth, polish, flamed, clived.

Prevailing applications: interior and exterior.

Physical and mechanical properties: volumetric weight: 2680-2740 kg/m3; water absorption: 0.3 (weight %); compression breaking load: 1959-2520 kg/cm2; compression
breaking load after gelivity: 1655-2286 kg/cm2; bending breaking load: 193-207 kg/cm2; thermal expansion coefficient: 0.0085 mm/m°C; elasticity modulus: 752000 kg/cm2; wear for
abrasion according to Boehme: 5-8 cm3/50cm2; Mohs hardness: >5.

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Description from
TRE
Collection: materials, manufacturing and uses
ANNUAL STONE

by
Beatrice Zoppas
nextlast

Manufacture, supply and fitting of quality granite, marble, quartz stone worktops, countertops and other stone products
at the best prices available from our new workshop in Reading, Berkshire.

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